Experiments in Fluids

, 59:13 | Cite as

Aeroacoustic analysis of the human phonation process based on a hybrid acoustic PIV approach

  • Alexander LodermeyerEmail author
  • Matthias Tautz
  • Stefan Becker
  • Michael Döllinger
  • Veronika Birk
  • Stefan Kniesburges
Research Article


The detailed analysis of sound generation in human phonation is severely limited as the accessibility to the laryngeal flow region is highly restricted. Consequently, the physical basis of the underlying fluid–structure–acoustic interaction that describes the primary mechanism of sound production is not yet fully understood. Therefore, we propose the implementation of a hybrid acoustic PIV procedure to evaluate aeroacoustic sound generation during voice production within a synthetic larynx model. Focusing on the flow field downstream of synthetic, aerodynamically driven vocal folds, we calculated acoustic source terms based on the velocity fields obtained by time-resolved high-speed PIV applied to the mid-coronal plane. The radiation of these sources into the acoustic far field was numerically simulated and the resulting acoustic pressure was finally compared with experimental microphone measurements. We identified the tonal sound to be generated downstream in a small region close to the vocal folds. The simulation of the sound propagation underestimated the tonal components, whereas the broadband sound was well reproduced. Our results demonstrate the feasibility to locate aeroacoustic sound sources inside a synthetic larynx using a hybrid acoustic PIV approach. Although the technique employs a 2D-limited flow field, it accurately reproduces the basic characteristics of the aeroacoustic field in our larynx model. In future studies, not only the aeroacoustic mechanisms of normal phonation will be assessable, but also the sound generation of voice disorders can be investigated more profoundly.



This work was supported by the European Unions Seventh Framework Programme for research, technological development and demonstration under Grant agreement no. 308874. Additionally, the work was supported by the Else Kröner-Fresenius Stiftung under Grant agreement no. 2016 A78. The authors also gratefully acknowledge the funding of the Erlangen Graduate School in Advanced Optical Technologies (SAOT) by the German Research Foundation (DFG) within the framework of the German Excellence Initiative.

Supplementary material

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  1. Adrian RJ, Westerweel J (2011) Particle image velocimetry. Cambridge University Press, CambridgezbMATHGoogle Scholar
  2. Alipour F, Brücker C, Cook DD, Gömmel A, Kaltenbacher M, Mattheus W, Mongeau L, Nauman E, Schwarze R, Tokuda I, Zörner S (2011) Mathematical models and numerical schemes for the simulation of human phonation. Curr Bioinform 6:323–343CrossRefGoogle Scholar
  3. Audier P, Sciamarella D, Artana G (2016) Pre-switching bifurcation of a slender jet. Phys Fluids 28:1–14CrossRefGoogle Scholar
  4. Becker S, Kniesburges S, Müller S, Delgado A, Link G, Kaltenbacher M (2009) Flow-structure–acoustic interaction in a human voice model. J Acoust Soc Am 125(3):1351–1361CrossRefGoogle Scholar
  5. Bendat JS, Piersol AG (2010) Random data: analysis and measurement procedures, 4th edn. Wiley, HobokenCrossRefzbMATHGoogle Scholar
  6. Cavalli L, Hirson A (1999) Diplophonia reappraised. J Voice 13:542–556CrossRefGoogle Scholar
  7. Chisari N, Artana G, Sciamarella D (2010) Vortex dipolar structures in a rigid model of the larynx at flow onset. Exp Fluids 50(2):397–406CrossRefGoogle Scholar
  8. Curle N (1955) The influence of solid bodies upon aerodynamic sound. Proc R Soc Lond 231(1187):505–514MathSciNetCrossRefzbMATHGoogle Scholar
  9. Döllinger M, Berry DA (2006) Computation of the three-dimensional medial surface dynamics of the vocal folds. J Biomech 39(2):369–374CrossRefGoogle Scholar
  10. Döllinger M, Kaltenbacher M (2016) Recent advances in understanding the human phonatory process. Acta Acust 102:195–208CrossRefGoogle Scholar
  11. Döllinger M, Kobler J, Berry DA, Mehta DD, Luegmair G, Bohr C (2011) Experiments on analysing voice production: Excised (human, animal) and in vivo (animal) approaches. Curr Bioinform 6:286–304CrossRefGoogle Scholar
  12. Drechsel JS, Thomson SL (2008) Influence of supraglottal structures on the glottal jet exiting a two-layer synthetic, self-oscillating vocal fold model. J Acoust Soc Am 123(6):4434–4445CrossRefGoogle Scholar
  13. Durst F (2007) Fluid mechanics: an introduction to the theory of fluid flows. Springer, BerlinGoogle Scholar
  14. Durst F, Heim U, Ünsal B, Kullik G (2003) Mass flow rate control system for time-dependent laminar and turbulent flow investigations. Meas Sci Technol 14(7):893–902CrossRefGoogle Scholar
  15. Erath B, Plesniak W (2006a) An investigation of bimodal jet tracectory in flow through scaled models of the human vocal tract. Exp Fluids 40:683–696CrossRefGoogle Scholar
  16. Erath B, Plesniak W (2006b) The occurrence of the Coanda effect in pulsatile flow through static models of the human vocal folds. J Acoust Soc Am 120:1000–1011CrossRefGoogle Scholar
  17. Erath B, Plesniak M (2010a) Viscous flow features in scaled-up physical models of normal and pathological vocal phonation. Int J Heat Fluid Flow 31:468–481CrossRefGoogle Scholar
  18. Erath B, Plesniak W (2010b) An investigation of asymmetric flow features in a scaled-up driven model of the human vocal folds. Exp Fluids 49:131–146CrossRefGoogle Scholar
  19. Erath B, Zañartu M, Stewart K, Plesniak M, Sommer D, Peterson S (2013) A review of lumped-element models of voiced speech. Speech Commun 55:667–690CrossRefGoogle Scholar
  20. Ewert R, Schröder W (2003) Acoustic perturbation equations based on flow decomposition via source filtering. J Comput Phys 188:365–398MathSciNetCrossRefzbMATHGoogle Scholar
  21. Freund J (2001) Noise sources in a low-reynolds-number turbulent jet at mach 0.9. J Fluid Mech 438:277–305CrossRefzbMATHGoogle Scholar
  22. Haigermoser C (2009) Application of an acoustic analogy to piv data from rectangular cavity flow. Exp Fluids 47:145–157CrossRefGoogle Scholar
  23. Hamdi M, Havet M, Rouaud O, Tarlet D (2014) Comparison of different tracers for piv measurements in ehd airflow. Exp Fluids 55:1702CrossRefGoogle Scholar
  24. Henning A, Kaepernick K, Ehrenfried K, Koop L, Dillmann A (2008) Investigation of aeroacoustic noise generation by simultaneous particle image velocimetry and microphone measurements. Exp Fluids 45:1073–1085CrossRefGoogle Scholar
  25. Hirano M (1981) Clinical examination of voice, disorders of human communication, vol 5, 1st edn. Springer, WienGoogle Scholar
  26. Hofmans GCJ, Groot G, Ranucci M, Graziani G, Hirschberg A (2003) Unsteady flow through in-vitro models of the glottis. J Acoust Soc Am 113(3):1658–1675CrossRefGoogle Scholar
  27. Howe M, McGowan R (2007) Sound generated by aerodynamic sources near a deformable body, with application to voiced speech. J Fluid Mech 592:367–392MathSciNetCrossRefzbMATHGoogle Scholar
  28. Hüppe A, Kaltenbacher M (2015) Investigation of interpolation strategies for hybrid schemes in computational aeroacoustics. In: DEGA (ed) Fortschritte der Akustik—DAGA 2015. DEGA, NürnbergGoogle Scholar
  29. Inwald E, Döllinger M, Schuster M, Eysholdt U, Bohr C (2011) Multiparametric analysis of vocal fold vibrations in healthy and disordered voices in high-speed imaging. J Voice 25(5):576–590CrossRefGoogle Scholar
  30. Kaltenbacher M, Escobar M, Becker S, Ali I (2010) Numerical simulation of flow-induced noise using LES/SAS and Lighthill’s acoustic analogy. Int J Numer Methods Fluids 63(9):1103–1122MathSciNetzbMATHGoogle Scholar
  31. Kniesburges S, Thomson SL, Barney A, Triep M, Sidlof P, Horacek J, Brucker C, Becker S (2011) In vitro experimental investigation of voice production. Curr Bioinform 6:305–322CrossRefGoogle Scholar
  32. Kaltenbacher B, Kaltenbacher M, Sim I (2013) A modified and stable version of a perfectly matched layer technique for the 3-d second order wave equation in time domain with an application to aeroacoustics. J Comput Phys 235:407–422MathSciNetCrossRefzbMATHGoogle Scholar
  33. Kniesburges S, Hesselmann C, Becker S, Schlücker E, Döllinger M (2013) Influence of vortical flow structures on the glottal jet location in the supraglottal region. J Voice 27(5):531–544CrossRefGoogle Scholar
  34. Kniesburges S, Lodermeyer A, Becker S, Traxdorf M, Döllinger M (2016) The mechanisms of subharmonic tone generation in a synthetic larynx model. J Acoust Soc Am 139(6):3182–3192CrossRefGoogle Scholar
  35. Kniesburges S, Birk V, Lodermeyer A, Schützenberger A, Bohr C, Becker S (2017) Effect of the ventricular folds in a synthetic larynx model. J Biomech 55:128–133CrossRefGoogle Scholar
  36. Koschatzky V, Moore P, Westerweel J, Scarano F, Boersma BJ (2011) High speed piv applied to aerodynamic noise investigation. Exp Fluids 50:863–876CrossRefGoogle Scholar
  37. Krebs F, Silva F, Sciamarella D, Artana G (2012) A three-dimensional study of the glottal jet. Exp Fluids 52(5):1133–1147CrossRefGoogle Scholar
  38. Laje R, Gardner T, Mindlin G (2001) Continuous model for vocal fold oscillations to study the effect of feedback. Phys Rev E 64(5):1–7CrossRefGoogle Scholar
  39. Lerch R, Sessler G, Wolf D (2009) Technische Akustik. Springer, BerlinCrossRefGoogle Scholar
  40. Lighthill M (1952) On sound generated aerodynamically. I. General theory. Proc R Soc Lond Ser A Math Phys Sci 211(1107):564–587MathSciNetCrossRefzbMATHGoogle Scholar
  41. Lodermeyer A, Becker S, Döllinger M, Kniesburges S (2015) Phase-locked flow field analysis in a synthetic human larynx model. Exp Fluids 56(77):1–13Google Scholar
  42. Mittal R, Erath B, Plesniak M (2013) Fluid dynamics of human phonation and speech. Annu Rev Fluid Mech 45:437–467MathSciNetCrossRefzbMATHGoogle Scholar
  43. Neubauer J, Zhang Z, Zhang ZR, Berry D (2007) Coherent structures of the near field flow in a self-oscillating physical model of the vocal folds. J Acoust Soc Am 121(2):1102–1018CrossRefGoogle Scholar
  44. Oren L, Koshla S, Gutmark E (2014) Intraglottal geometry and velocity measurements in canine larynges. J Acoust Soc Am 135(1):380–388CrossRefGoogle Scholar
  45. Oren L, Khosla S, Gutmark E (2016) Effect of vocal fold asymmetries on glottal flow. Laryngoscope 126:2534–2538CrossRefGoogle Scholar
  46. Pickup B, Thomson S (2009) Influence of asymmetric stiffness on the structural and aerodynamic response of synthetic vocal fold models. J Biomech 42:2219–2225CrossRefGoogle Scholar
  47. Pierce A (1989) Acoustics: an introduction to its physical principles and applications. Acoustical Society of America, MelvilleGoogle Scholar
  48. Raffel M, Willert C, Wereley S, Kompenhans J (2007) Particle image velocimetry—a practical guide, 2nd edn. Springer, BerlinGoogle Scholar
  49. Scarano F (2013) Tomographic piv: principles and practice. Meas Sci Technol 24:1–29CrossRefGoogle Scholar
  50. Scherer R, Witt K, Zhang C, Kucinschi B, Afjeh A (2001) Intraglottal pressure profiles for a symmetric and oblique glottis with a divergence angle of 10 degrees. J Acoust Soc Am 109(4):1616–1630CrossRefGoogle Scholar
  51. Sciamarella D, Artana G (2015) Relaxation to one-dimensional postglottal flow in a vocal fold model. Speech Commun 66:176–181CrossRefGoogle Scholar
  52. Seo JH, Moon YJ (2007) Aerodynamic noise prediction for long-span bodies. J Sound Vib 306(3):564–579CrossRefGoogle Scholar
  53. Sidlof P, Doare O, Cadot O, Chaigne A (2011) Measurement of flow separation in a human vocal folds model. Exp Fluids 51:123–136CrossRefGoogle Scholar
  54. Sidlof P, Zörner S, Hüppe A (2015) A hybrid approach to the computational aeroacoustics of human voice production. Biomech Model Mechanobiol 14(3):473–488CrossRefGoogle Scholar
  55. Tautz M, Becker S, Besserer K, Hüppe A, Kaltenbacher M (2015) Numerical scheme for acoustic source term calculation in lighthills analogy. In: Acoustics II (IIAV) V (eds) Proceedings of the 22nd international congress on sound and vibration. International Institute of Acoustics and Vibration (IIAV)Google Scholar
  56. Terra W, Sciacchitano A, Scarano F (2017) Aerodynamic drag of a transiting sphere by large-scale tomographic-piv. Exp Fluids 58:1–14CrossRefGoogle Scholar
  57. Thomson S, Mongeau L, Frankel F (2003) Physical and numerical flow excited vocal fold model. In: Models and analysis of vocal emissions for biomedical applications: Proceedings of the 3rd international workshop MAVEBAGoogle Scholar
  58. Titze I (1988) The physics of small-amplitude oscillation of the vocal folds. J Acoust Soc Am 83:1536–1552CrossRefGoogle Scholar
  59. Titze I (1994) Principles of voice production. Prentice Hall, Englewood CliffsGoogle Scholar
  60. Titze I, Schmidt S, Titze M (1995) Phonation threshold pressure in a physical model of the vocal fold mucosa. J Acoust Soc Am 97(5):3080–3084CrossRefGoogle Scholar
  61. Titze I (2000) Principles of voice production, 2nd edn. National Center for Voice and Speech, DenverGoogle Scholar
  62. Titze I (2006) The myoelastic aerodynamic theory of phonation. National Center for Voice and Speech, DenverGoogle Scholar
  63. Titze I (2015) Sensitivity of odd-harmonic amplitudes to open quotient and skewing quotient in glottal airflow. J Acoust Soc Am 137:502–204CrossRefGoogle Scholar
  64. Triep M, Brücker C, Schröder W (2005) High-speed piv measurements of the flow downstream of a dynamic mechanical model of the human vocal folds. Exp Fluids 39:232–245CrossRefGoogle Scholar
  65. Tuerke F, Pastur L, Sciamarella D, Lusseyran F, Artana G (2017) Experimental study of double-cavity flow. Exp Fluids 58:76CrossRefGoogle Scholar
  66. Zhang Z (2016) Mechanics of human voice production and control. J Acoust Soc Am 140(4):2614–2635CrossRefGoogle Scholar
  67. Zhang C, Zhao W, Frankel F, Mongeau L (2002a) Computational aeroacoustics of phonation, part II: Effects of flow parameters and ventricular folds. J Acoust Soc Am 112(5):2147–2154CrossRefGoogle Scholar
  68. Zhang Z, Mongeau L, Frankel S (2002b) Broadband sound generation by confined jets. J Acoust Soc Am 112(2):677–689CrossRefGoogle Scholar
  69. Zhang Z, Mongeau L, Frankel SH, Thomson S, Park JB (2004) Sound generation by steady flow through glottis-shaped orifices. J Acoust Soc Am 116(3):1720–1728CrossRefGoogle Scholar
  70. Zhao W, Zhang C, Frankel S, Mongeau L (2002) Computational aeroacoustics of phonation, part I: Computational methods and sound generation mechanisms. J Acoust Soc Am 112(5):2134–2146CrossRefGoogle Scholar
  71. Zheng X, Mittal R, Bielamowicz S (2011) A computational study of asymmetric glottal jet deflection during phonation. J Acoust Soc Am 129:2133–2143CrossRefGoogle Scholar
  72. Zörner S, Sidlof P, Hüppe A, Kaltenbacher M (2016) Flow and acoustic effects in the larynx for varying geometries. Acta Acoust 102:257–267CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Institute of Process Machinery and Systems EngineeringFriedrich-Alexander University Erlangen-NurembergErlangenGermany
  2. 2.Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich-Alexander University Erlangen-NurembergErlangenGermany
  3. 3.Division for Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Head and Neck Surgery, Medical SchoolFriedrich-Alexander University Erlangen-NurembergErlangenGermany

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